Sack cleaning and turning apparatus.



'PATENTED APR. 14 A. WILLIMANN & P. 111-30111". SACK CLEANING AND TURNING APPARATUS.

APPLICATION FILED JUNE 21. 1907.

4 SHEBTS-SHEET 1.

No. 884,4A9.

PATENTED APR. 14, 1908. A. WILLIMANN & P. 5120111", SACK CLEANING AND TURNING APPARATUS.

APPLIOATION FILED'JUNE 21, 1907.

- '1 SHEETS-SHEET 2.

I OOOOOOOOOO'OO No."884,449. PATENTED APR. 14, 1908. A. WILLIMANN & P. HEGHT. SACK CLEANINGAND TURNING APPARATUS.

APPLICATION FILED JUNE 21. 1907.

4 SKEETS-SHEET 3.

1 cars; H614.

Jnvenl ors:

' Attorney.

No. 884,449. I FATE A. WILLIMANN & P. HEGHT. SACK CLEANING NTED APR. 14, 1908.

,AND TURNING APPARATUS.

APPLICATION FILED JUNE 21, 1907. A

4 SHEETS-SHEET 4.

witnesses;

No. senses.

Specification i Letters Patent.

Patented. April 1 1908 Application filed June 21, 1907. Serial No 380,131.

T 0 all 'wiaoi'n it w;

\ that we, i i-rob: ll ILLIMANN is oi the CW1 s Rerl i Th lilie,i r his airs l'u n machine for 2 irks mniveyerl through .llelnhains. The lies in the proviwrehy the seeks are auteside out and conveyed i been in the nown each by hand on e. but in the are eutomatie he continuiprrweil inn,- ieul interruption sacks of differthe adjustment a in 11st 0 ,uriinel section horizontal see- Figs. 3 and ines A-B and :he as the sack t mechanism for vise 7 shows he heaters. Fig. 8 is -hol. lers,'entl Fi 9 he seal: is held the turning i t details, Pig. ii-i1 of Fig. v the line J-l'l of ninsticslly illusi the hold are age of the seek shows pert of hows n eens hinted by shafts 13 provided with cams the heaters act (Fig. '7). The heaters are 2I('- The earns dis )lace and then release the beatso that the latter heel. "tinst the sacks on the grates by virtue oil their elzistirit-y. "he surfaces of the heaters are covered with leather, inrliaa'ubber or the like 120. The sacks pass first between the lower grate nil lower row of heaters, and ere-beaten on one side, whereupon they revel past the upper grate and are beaten on the other SillO by the upper row of heaters. Above the upper grate 11 there two cylindrical rotatable brushes L5 and H5. untell one above the other Hill elljuslsliile relatively to boards or plates 17. Both sides of the ascending seek are brushed 'hy these hrushos, whereupon the clean sari; passed to the turning device.

The turning levice comprises a cross or s ti'ider 23 having four hollow arms 18 and retslehle on a s] iel't 'lhe letter is supported by hearings in the easing l, and is rotatable independently oi thespiiler 23. To the outer end of each 31111 18 there are hinged two finger'plates 24 connected by links (Fig. 16) to e rod 19 movable within the arm. A cam 20 fixed to the shell 22 is adapted to thrust the rod outwards so that the finger plates 24 are moved apart. When the cam. has cleared the rod, :1- spring 26 pulls the plates together again and thrusts the ro l inwards.

From the brushes the sack trails (lOWI1- WSLIdS over an inclined plate 27 and. is drawn on to one of the arms 18 of the spider T0 accelerate the oi the seek on to the said arm a pair oi rolls 2S M14129 are arranged near the arm. The roll 28 has fixed beerings, but the roll 2%) is carried by a lever supported by :1 spring 360. llie roll 29 is driven by a chain 301, and the cireuxnlerentiel velocity of the roll 25, 29, is greater than the velocity of the conveyor chains, so that the rue-iced onthe arm 18. 'When the bottom of the sack has relished the finple'les 24 the IOkl l9 thrusts the letter apart (T v. 16). As soon as the sack has be in placed on the arm 18 in this manner nieclmnisin.comes into action for inverting the seek. 'lhis mechanism comprises it curved arm 30 (Figs. 1 and 16) fixed to a shaft 21 mounted in the casing ina position which enables the free end of the arm 30 to be thrust between the plates 24. To the shaft 21 is fixed a toothed wheel 210 meshing with a toothed segment 33 mounted in of the earns 20 and 35 on the sha t 22 are such that when the cam 20 has moved the plates 24 apart it does not clear the rod 19 until the cam 35 has thrust the arm 30 between the said plates. The rod 34 drops from the cam 35 just after the rod 19 clears the cam 20. The arm 30 is then pulled back into its normal osition by a spring 60.

While the hofders by which the sack is attached to the conveyer chains are traveling past the sprocket wheels 6, 6, levers 53 abut against the shaft 22 and impart a quarter of a revolution to the holders, in order to allow of removing the sack from the arm18. At the same time the spider 23 erforms a quarter of a revolution, so that t 1e sack is rocked into the position in which it is shown at the right hand side of Fig. 16. The conveyor chains continue to travel while this is taking place, so that the sack is stripped oll' thearm 18 and turned inside out on the plate 37. Two rotating rolls 40 and 41, the circumferential velocity of which exceeds the velocity of the chains, accelerate the removal of the sack from the arm 18. The holders 24 re tain their hold on the sack until the rolls 40 and 41 have completely turned the latter inside out. The holders are rotated through one quarter of a revolution by means of abutments in order that the sack can pass out oi the machine, as will be described hereinafter. The holders travel past the wheels 8 back to that part of the machine at which the sacks are attached to the chains. The arms 18 of the spider 23 are preferably constructed as shown in Figs. 2, 4 and 16, two finger plates being hinged to each arm, and the arm being narrower directly behind the said plates, so that there is room thereon for the rucked part of the sack. During the turning or inverting of the sack the folds occupy the space thus provided. To facilitate the removal of the sack from the arm 18 in the manner intended the latter is notched as shown at 180 so that the rack does not slide back but is frictionally held while the end is drawn back as shown on the right of Fig. 16.

The intermittent rotation of the spider 23 can be produced by various means, for exam do by means of a toothed wheel 39 (Fig. 6) fixed to the shaft 22 and meshing with a toothed wheel 64, the latter carrying a dog 43 which intermittently actuatcs a ratchet 63 causes the spider to perform exactly one quarter of a revolution.

In the construction illustrated the sack holding devices form in the usual manner links of the chains. Each of these devices comprises a box 44 containing a ball-bearing for the holding member 45. The levers 53 already referred to are fixed to the members 45. Each of the latter carries a pivoted hook 47 connected b a link 48 and lever 49 to a pin 50 adapte cam 51", the latter being fixed to a ring 51 provided with an abutment lever 52. The parts 45 and 51 are connected to each other by a spiral spring 450. The part 4.5 can be rotate( by the abutment lever 53. The levers 52 and 53 are provided with resilient catches adapted to engage recesses in the wall of the box 44 for the purpose of retaining the levers in their end positions. to the members 45 for the purpose of holding open the mouth of the sack, in order to facilitate the drawing of the latter on to the arm 18.

The sack is attached to the members 45 5 as the latter pass along where the chains are horizontal, namely between the sprocket wheels 3 and 4, the hooks 47 being then in the positionshown in Fig. 13, so that the sack can be hooked to the hooks 47 of the members -15 by hand. The chains then convey the sack to the heaters and brushes and draw it upon one of the arms 18. WVhile this arm 13 is rocking through 90 degrees the hooks 47 are automatically withdrawn, 5

the levers 53 being rocked through 180 degrees by means of abutment 530 (Fig. 15), and the members 45 beng rotated through 180 degrees relatively to the boxes 44. At

the same time the ring 51 is rotated through 90 degrees by the lever 52 and abutment? 520, so that the evers assume the positions shown in Fig. t). The pins 50 are by this means actuated so that the books 47 release the sack, and the latter is at the same time 15 f engaged by prongs 57 fixed to the members 45, and is pushed off the arm 13. The levers 52 and 53 are automatically moved back to their original positions by means of racks 531 arranged between the wheels 3 and 3 and engaging gear teeth 450 on the members 45. i

T oallow of easily attaching sacks of dif-' ferent widths to the chains the sprocket wheels 3, 3 are axially adjustable by means to be displaced by a 30 relatively to the box 44 and ring 51 35 Springs 54 are fixed 90 6', (S and 7 7 are movable 13g crl on fixed axles, and springs 400 as shown in Fig. 3 tend to thrust them apart, so that the sack is kept taut between the chains. The lighter dust, flour, moths and the like beaten and brushed out of the sack is remot ed'b'y means of a suction apparatus 600 shown diagrammatically, a filter being arranged in the path of the air current. .Any suitable suction apparatus may be used. The flour falling from the heaters 12 is collected in a trough 100 and removed thence by a screw conveyer 101.

What we claim as our invention and desire to secure by Letters Patent of the United 1. In a sack cleaning and turning apparatus, the combination of a spider, means for giving partial rotation thereto, sack carrying devices movable in a path substantially intersecting the axis of the spider, and 11182111881; the extremity of each s ider arm for engaging a sack bottom when t e sack is drawn onto the-spider arm.

2. In a sack cleaning and turning apparatus the combination of a spider, means for giving partial rotation thereto, sack carrying devices movable in a path substantially intersecting the axis of the spider, and means at the extremity of each s ider arm for engaging a sack bottom w en the sack is drawn on to the spider arm, and a finger for thrusting the sack bottom into the engaging device.

3. In a sack cleaning and turning apparatus, the combination of a spider, means for giving partial rotation thereto, sack carrying device's movable in a path substantially intersecting the axis of the spider,and means at the extremity of each spider arm for en gaging a sack bottom when the i sack is rawn onto the spider arm, the sack carrylng devices comprising engaging hooks, means for Withdrawing the engaging hooks as the devices pass the axis of the spider, and teeth on-the sack carrying devices adapted to strip the sack from the spider arm.

In witness whereof we have signed this specification in the presence of two witnesses.

ANTON WILLIMANN. PETRUS HECl-ll. 

